diff -urp linux-2.6.27-rc6-git4/fs/nfs/client.c linux-2.6.27-rc6-git4-nfs_ra/fs/nfs/client.c
--- linux-2.6.27-rc6-git4/fs/nfs/client.c	2008-09-17 11:35:21.000000000 +0200
+++ linux-2.6.27-rc6-git4-nfs_ra/fs/nfs/client.c	2008-09-17 11:55:18.000000000 +0200
@@ -722,6 +722,11 @@ error:
 }
 
 /*
+ * NFS Client Read-Ahead factor
+*/
+unsigned int nfs_ra_factor;
+
+/*
  * Load up the server record from information gained in an fsinfo record
  */
 static void nfs_server_set_fsinfo(struct nfs_server *server, struct nfs_fsinfo *fsinfo)
@@ -746,7 +751,11 @@ static void nfs_server_set_fsinfo(struct
 		server->rsize = NFS_MAX_FILE_IO_SIZE;
 	server->rpages = (server->rsize + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
 
-	server->backing_dev_info.ra_pages = server->rpages * NFS_MAX_READAHEAD;
+	dprintk("nfs_server_set_fsinfo: rsize, wsize, rpages, \
+		nfs_ra_factor, ra_pages: %d %d %d %d %d\n",
+		server->rsize,server->wsize,server->rpages,
+		nfs_ra_factor,server->rpages * nfs_ra_factor);
+	server->backing_dev_info.ra_pages = server->rpages * nfs_ra_factor;
 
 	if (server->wsize > max_rpc_payload)
 		server->wsize = max_rpc_payload;
diff -urp linux-2.6.27-rc6-git4/fs/nfs/inode.c linux-2.6.27-rc6-git4-nfs_ra/fs/nfs/inode.c
--- linux-2.6.27-rc6-git4/fs/nfs/inode.c	2008-09-17 11:35:21.000000000 +0200
+++ linux-2.6.27-rc6-git4-nfs_ra/fs/nfs/inode.c	2008-09-17 11:45:09.000000000 +0200
@@ -53,6 +53,8 @@
 
 /* Default is to see 64-bit inode numbers */
 static int enable_ino64 = NFS_64_BIT_INODE_NUMBERS_ENABLED;
+static unsigned int ra_factor __read_mostly = NFS_MAX_READAHEAD;
+
 
 static void nfs_invalidate_inode(struct inode *);
 static int nfs_update_inode(struct inode *, struct nfs_fattr *);
@@ -1347,6 +1349,12 @@ static int __init init_nfs_fs(void)
 #endif
 	if ((err = register_nfs_fs()) != 0)
 		goto out;
+
+	if (ra_factor < 1 || ra_factor > NFS_MAX_READAHEAD)
+		nfs_ra_factor = NFS_MAX_READAHEAD;
+	else
+		nfs_ra_factor = ra_factor;
+
 	return 0;
 out:
 #ifdef CONFIG_PROC_FS
@@ -1388,6 +1396,10 @@ static void __exit exit_nfs_fs(void)
 MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>");
 MODULE_LICENSE("GPL");
 module_param(enable_ino64, bool, 0644);
+MODULE_PARM_DESC(enable_ino64, "Enable 64-bit inode numbers (Default: 1)");
+module_param(ra_factor, uint, 0644);
+MODULE_PARM_DESC(ra_factor,
+	"Number of rsize read-ahead requests (Default/Max: 15, Min: 1)");
 
 module_init(init_nfs_fs)
 module_exit(exit_nfs_fs)
diff -urp linux-2.6.27-rc6-git4/fs/nfs/sysctl.c linux-2.6.27-rc6-git4-nfs_ra/fs/nfs/sysctl.c
--- linux-2.6.27-rc6-git4/fs/nfs/sysctl.c	2008-07-13 23:51:29.000000000 +0200
+++ linux-2.6.27-rc6-git4-nfs_ra/fs/nfs/sysctl.c	2008-09-17 11:45:09.000000000 +0200
@@ -14,9 +14,12 @@
 #include <linux/nfs_fs.h>
 
 #include "callback.h"
+#include "internal.h"
 
 static const int nfs_set_port_min = 0;
 static const int nfs_set_port_max = 65535;
+static const unsigned int min_nfs_ra_factor = 1;
+static const unsigned int max_nfs_ra_factor = NFS_MAX_READAHEAD;
 static struct ctl_table_header *nfs_callback_sysctl_table;
 
 static ctl_table nfs_cb_sysctls[] = {
@@ -58,6 +61,16 @@ static ctl_table nfs_cb_sysctls[] = {
 		.mode		= 0644,
 		.proc_handler	= &proc_dointvec,
 	},
+	{
+		.ctl_name = CTL_UNNUMBERED,
+		.procname = "nfs_ra_factor",
+		.data = &nfs_ra_factor,
+		.maxlen = sizeof(unsigned int),
+		.mode = 0644,
+		.proc_handler = &proc_dointvec_minmax,
+		.extra1 = (unsigned int *)&min_nfs_ra_factor,
+		.extra2 = (unsigned int *)&max_nfs_ra_factor,
+	},
 	{ .ctl_name = 0 }
 };
 
diff -urp linux-2.6.27-rc6-git4/include/linux/nfs_fs.h linux-2.6.27-rc6-git4-nfs_ra/include/linux/nfs_fs.h
--- linux-2.6.27-rc6-git4/include/linux/nfs_fs.h	2008-09-17 11:35:25.000000000 +0200
+++ linux-2.6.27-rc6-git4-nfs_ra/include/linux/nfs_fs.h	2008-09-17 11:45:09.000000000 +0200
@@ -464,6 +464,11 @@ extern int nfs_writeback_done(struct rpc
 extern void nfs_writedata_release(void *);
 
 /*
+ * linux/fs/nfs/client.c
+*/
+extern unsigned int nfs_ra_factor;
+
+/*
  * Try to write back everything synchronously (but check the
  * return value!)
  */
diff -urp linux-2.6.27-rc6-git4/Makefile linux-2.6.27-rc6-git4-nfs_ra/Makefile
--- linux-2.6.27-rc6-git4/Makefile	2008-09-17 11:35:56.000000000 +0200
+++ linux-2.6.27-rc6-git4-nfs_ra/Makefile	2008-09-17 11:45:09.000000000 +0200
@@ -1,7 +1,7 @@
 VERSION = 2
 PATCHLEVEL = 6
 SUBLEVEL = 27
-EXTRAVERSION = -rc6-git4
+EXTRAVERSION = -rc6-git4-nfs_ra
 NAME = Rotary Wombat
 
 # *DOCUMENTATION*